/* Nivose — site vitrine. Pas de framework, pas de build. */

:root {
  --bg: #fbfaf7;
  --surface: #ffffff;
  --text: #1c1b18;
  --muted: #65625a;
  --line: #e6e2d8;
  --accent: #1f4e79;
  --accent-ink: #ffffff;
  --accent-soft: #eaf1f8;
  --notice-bg: #fff6d6;
  --notice-line: #e5c65a;
  --radius: 12px;
  --max: 920px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #15161a;
    --surface: #1d1f25;
    --text: #ececec;
    --muted: #a3a39c;
    --line: #2d3038;
    --accent: #7fb0e0;
    --accent-ink: #0f1a26;
    --accent-soft: #1d2a3a;
    --notice-bg: #3a3214;
    --notice-line: #a88a2a;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 2px; }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 16px; }

/* ---- header */

.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 0;
}

.brand {
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.02em;
  color: var(--text);
  text-decoration: none;
}

.top nav { display: flex; gap: 20px; font-size: 0.95rem; }
.top nav a { color: var(--muted); text-decoration: none; }
.top nav a:hover { color: var(--text); }

/* ---- hero */

.hero { padding: 56px 0 40px; }

.hero h1 {
  margin: 0 0 12px;
  font-size: clamp(2.2rem, 6vw, 3.4rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.hero p {
  margin: 0;
  max-width: 44ch;
  font-size: 1.15rem;
  color: var(--muted);
}

/* ---- sections */

section { padding: 40px 0; border-top: 1px solid var(--line); }

h2 { margin: 0 0 8px; font-size: 1.6rem; letter-spacing: -0.01em; }
.lead { margin: 0 0 24px; color: var(--muted); max-width: 60ch; }

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin: 0 0 28px;
  padding: 0;
  list-style: none;
}

.features li {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px 18px;
}

.features strong { display: block; margin-bottom: 4px; }
.features span { color: var(--muted); font-size: 0.95rem; }

/* ---- pricing */

.plans {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 16px;
  margin: 0 0 12px;
  padding: 0;
  list-style: none;
}

.plan {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.plan .name { font-weight: 600; }
.plan .price { font-size: 1.7rem; font-weight: 700; letter-spacing: -0.02em; }
.plan .price small { font-size: 0.9rem; font-weight: 400; color: var(--muted); }
.plan .quota { color: var(--muted); font-size: 0.95rem; }

.fineprint { margin: 0 0 24px; color: var(--muted); font-size: 0.9rem; }

/* ---- buttons */

.button {
  display: inline-block;
  background: var(--accent);
  color: var(--accent-ink);
  padding: 12px 20px;
  border-radius: 999px;
  font-weight: 600;
  text-decoration: none;
}

.button:hover { filter: brightness(1.08); }

.button.secondary {
  background: var(--accent-soft);
  color: var(--accent);
}

.actions { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }

/* ---- footer */

footer {
  border-top: 1px solid var(--line);
  padding: 28px 0 40px;
  color: var(--muted);
  font-size: 0.9rem;
}

footer .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px 24px; }
footer nav { display: flex; gap: 16px; }
footer a { color: var(--muted); }

/* ---- legal pages */

.legal { padding: 32px 0 48px; }
.legal h1 { font-size: 2rem; margin: 0 0 4px; letter-spacing: -0.02em; }
.legal .updated { color: var(--muted); margin: 0 0 24px; font-size: 0.95rem; }
.legal h2 { font-size: 1.2rem; margin: 28px 0 8px; }
.legal p, .legal li { max-width: 70ch; }
.legal ul { padding-left: 20px; }

.review-notice {
  background: var(--notice-bg);
  border: 1px solid var(--notice-line);
  border-radius: var(--radius);
  padding: 12px 16px;
  margin: 0 0 24px;
  font-size: 0.95rem;
}

@media (max-width: 600px) {
  .hero { padding: 36px 0 28px; }
  .top nav { gap: 14px; }
}